Nutritionist Razarenova advised eating avocado, chocolate and drinking green tea for memory. 
nutritionist Alexandra Razarenova, writes RBC.
One of the five healthiest foods for memory, she named avocado, which is high in healthy fats, high in potassium, fiber and antioxidants. Pantothenic acid has a positive effect on long-term memory, and when it is lacking, a person feels tired. However, those who are overweight should not abuse avocado, it is very high in calories.
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Rosemary has a beneficial effect on cognitive function and concentration, the specialist advised. It contains acetylcholine, which is needed to support thought processes. Regular consumption of olive oil will help to strengthen memory and neutralize toxins in the body. It is prescribed as an effective remedy for the prevention of Alzheimer's disease.
The antioxidant EGCG, which generates neural and stem cells, is found in green tea: it has a positive effect on memory. Drink it for those who want to avoid degenerative disorders. L-theanine in the drink increases learning and general performance.
Chocolate, which contains a lot of cocoa, has organic substances that supply the brain with oxygen. Dark chocolate is especially useful, which also helps to cope with drowsiness and improves overall tone.
Previously, the American psychiatrist Uma Naidu advised eating dark chocolate to keep brain cells healthy.